2008 Subaru WRX Emission Control

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    • Bosch® Premium Oxygen Sensor
      (0 reviews)
      # 35994397
      Subaru WRX 2008, Premium Oxygen Sensor by Bosch®. A worn-out oxygen sensor can cause engine performance problems and shorten the life of the catalytic converter. Tune-up your vehicle with an Oxygen Sensor from Bosch that is...
      Up to 15 % savings in fuel costsReduced CO2 emissions
      $54.62 - $70.84
    • NTK® Replacement Oxygen Sensor
      (0 reviews)
      # 22145652
      Subaru WRX 2008, Replacement Oxygen Sensor by NTK®. This product is designed to improve engine efficiency and fuel mileage, while reducing emissions and extending catalyst life. The oxygen sensor is made of premium quality material...
      Increases vehicle fuel economy and engine performance while decreasing vehicle exhaust emissionsDirect replacement
      $74.94
    • Denso® Downstream OE Connector Oxygen Sensor
      (0 reviews)
      # 21104210
      Subaru WRX 2008, Downstream OE Connector Oxygen Sensor by Denso®. Heated. 4 Wires. Denso's light duty oxygen sensor started to appear on vehicles with the development of fuel injection systems. The basic job of the sensor is to...
      Corrosion-resistant stainless steel constructionPTFE filter blocks efficiency-robbing contaminants
      $51.88 - $71.59
    • Standard® Intermotor™ Secondary Air Injection Bypass Valve
      (0 reviews)
      # 63130527
      Subaru WRX STI 2008, Intermotor™ Secondary Air Injection Bypass Valve by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $227.46
    • Accel® UEGO Wideband O2 Module
      (0 reviews)
      # 12710251
      Universal UEGO Wideband O2 Module by Accel®. No matter what vehicle you own, its ignition system is what helps to achieve the mileage and power you bought it for. Quality ignition system components are a sure way to let your engine...
      The finest quality at a great priceImproves your engine's performance
      $584.85
    • Accel® Gen VII™Linear Oxygen Sensor
      (0 reviews)
      # 12710299
      Universal Gen VII™Linear Oxygen Sensor by Accel®. No matter what vehicle you own, its ignition system is what helps to achieve the mileage and power you bought it for. Quality ignition system components are a sure way to let your...
      The finest quality at a great priceImproves your engine's performance
      $87.54 - $1,159.73
    • Walker Products Inc.® OE Connector Oxygen Sensor
      (0 reviews)
      # 8739929
      Subaru WRX 2008, OE Connector Oxygen Sensor by Walker Products Inc.®. Position: Rear. Is your CHECK ENGINE light on? Has your vehicle failed a state emissions test? Your vehicle’s emissions control system is in need of repair,...
      $90.89 - $99.03
    • Powerbuilt® Master Sensor Socket Kit
      (0 reviews)
      # 16795870
      Master Sensor Socket Kit - 7 Pc by Powerbuilt®. Sven piece Master Sensor Socket Kit removes and installs oxygen sensors, oil pressure sending units and vacuum switches equipped with wires or vacuum tubes. The kit includes single...
      Made with precision and quality in mindDesigned to meet your specific needs
      $35.38
    • Genuine® PCV Valve
      (0 reviews)
      # 8801343
      Subaru WRX / WRX STI 2008, PCV Valve by Genuine®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $26.04
    • Genuine® Breather Hose
      (0 reviews)
      # 44711926
      Subaru WRX 2008, Breather Hose by Genuine®. Position: Left. Note: Cylinder Head to P.C.V. Pipe. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $17.63
    • Denso® Upstream OE Connector Air Fuel Ratio Sensor
      (0 reviews)
      # 21061363
      Subaru WRX 2008, Upstream OE Connector Air Fuel Ratio Sensor by Denso®. 4 Wires. The air/fuel ratio sensor sends information to the engine management computer to makes adjustments based on driving conditions. This wider range and...
      Tarnish-proof platinum electrodes provides longer life and maintains accuracyQuick-response planar zircon element can quickly detect oxygen concentration
      $101.48 - $121.56
    • Bosch® Wideband Oxygen Sensor
      (0 reviews)
      # 35994395
      Subaru WRX 2008, Wideband Oxygen Sensor by Bosch®. Location: Upstream. Exact Fit. This sensor utilizes a sophisticated sensing element enabling it to produce a precise output in proportion to the air/fuel ratio. The A/F sensor...
      Detects the exact amount of unburned fuel in the exhaust streamOE connectors and OE-style harness for continuous wire from connector to sensor
      $102.99
    • Spectra Premium® Secondary Air Injection Pump Check Valve
      (0 reviews)
      # 57186172
      Subaru WRX / WRX STI 2008, Secondary Air Injection Pump Check Valve by Spectra Premium®. Spectra Premium's Secondary Air Pump Control Valves are engineered, developed and validated by our in-house team of Canadian engineers...
      Direct replacement - OE Fit, Form and FunctionManufactured with high quality aluminum to withstand temperature variations
      $166.45
    • Standard® Intermotor™ Vapor Canister Purge Solenoid
      (0 reviews)
      # 45115678
      Subaru WRX / WRX STI 2008, Intermotor™ Vapor Canister Purge Solenoid by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $83.03
    • Powerbuilt® 1/2" Dr. 7/8" (22mm) Oxygen Sensor Socket
      (0 reviews)
      # 16795808
      1/2" Dr. 7/8" (22mm) Oxygen Sensor Socket by Powerbuilt®. For removing and installing oxygen sensor and vacuum switches. Specially designed 7/8" (22mm) socket features slot for wiring connector pigtail or vacuum nipples. 2-1/2"...
      Made with precision and quality in mindDesigned to meet your specific needs
      $6.43
    • Powerbuilt® Oxygen Sensor Socket Kit
      (0 reviews)
      # 16795834
      Oxygen Sensor Socket Kit - Kit #51 by Powerbuilt®. For removing and installing oxygen sensor sockets. Special cut-out design on sockets prevents damage to wire leads.
      Made with precision and quality in mindDesigned to meet your specific needs
      $21.50
    • Powerbuilt® Specialty Switch Socket Kit
      (0 reviews)
      # 16795844
      Specialty Switch Socket Kit - Kit #62 by Powerbuilt®. For removal and installation of hard to reach oxygen sensors, oil pressure switches, oil pressure sending units and thermal sensor switches.
      Made with precision and quality in mindDesigned to meet your specific needs
      $44.18

    Guides & Articles
    An oxygen sensor (also known as an O2 sensor or Lambda sensor) is a sensor designed to generate a reading based on the content of oxygen in an automotive exhaust system. The sensor itself is made of a ceramic compound with porous-shaped electrodes coated in platinum, surrounded by a protective metal shell casing. O2 sensor casings are threaded, and the entire unit...
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